| commit | f01487119dda3d9f58c9729c7361ecc50a61c188 | |
| author | Andreas Herrmann <herrmann.der.user@googlemail.com> | |
| Tue, 27 Apr 2010 10:13:48 +0000 (27 12:13 +0200) | ||
| committer | H. Peter Anvin <hpa@linux.intel.com> | |
| Thu, 13 May 2010 23:21:20 +0000 (13 16:21 -0700) | ||
| tree | bbd1d01429950207716337fbbd9e9f356560258c | treesnapshot (tar.gz zip) |
| parent | b0c4d952a158a6a2547672cf4fc9d55e415410de | commitdiff |
x86, amd: Check X86_FEATURE_OSVW bit before accessing OSVW MSRs
If host CPU is exposed to a guest the OSVW MSRs are not guaranteed
to be present and a GP fault occurs. Thus checking the feature flag is
essential.
Cc: <stable@kernel.org> # .32.x .33.x
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
LKML-Reference: <20100427101348.GC4489@alberich.amd.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
If host CPU is exposed to a guest the OSVW MSRs are not guaranteed
to be present and a GP fault occurs. Thus checking the feature flag is
essential.
Cc: <stable@kernel.org> # .32.x .33.x
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
LKML-Reference: <20100427101348.GC4489@alberich.amd.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| arch/x86/kernel/process.c | diffblobblamehistory |